1916. Stanford Geospatial Center. This polygon shapefile is an index to 1:50,000 scale maps of North Korea, titled 'Chosen 1:50,000 Chikeizu.' This map series was originally produce... Stanford Digital Repository.

1944. Stanford Geospatial Center. This polygon shapefile is an index to 1:100,000 scale maps of Philippines, titled 'Firippin jūmanbun no ichi zu.' This map series was originally pr... Stanford Digital Repository.